Volatility indicators highlight potential moves of a stock which can either move sharply in the updwards or downwards direction. This indicator allows stocks to be compared on a level playing field to highlight high and low volatility. Normally, falling markets are more likely to be volatile than a rising markets due to the emotion that gets tied to trading. Use volatility indicators in conjunction with other indicators to reduce exposure to false moves.

Coca-Cola Amatil (ASX:CCL)

A technical indicator that measures downside risk in terms of both depth and duration of price declines. The Ulcer Index (UI) increases in value as the price moves farther away from a recent high and falls as the price rises to new highs. The indicator is usually calculated over 14 days with the UI showing the percentage drawdown a trader can expect from the high over that period. The greater the value of the UI the longer it takes for a stock to get back to the former high.